JPS5893315A - Production of inductive electromagnetic apparatus - Google Patents

Abstract

PURPOSE:To prevent thermal dererioration due to a vapor layer by a method wherein a coil constructed of an electric wire whose periphery is sealed with thermosetting insulating resin is joined with an iron core and heated at temperatures higher than the softening one of the resin, thereby the pressure is applied to the periphery. CONSTITUTION:An inductive electromanetic apparaus comprises an inside iron core 1, outside iron cores 2 and a coil 3. The coil 3 prepared by winding an electric wire 5 on a bobbin 4 is joined with the inside iron core 1 and then the outside iron cores 2 are added to assemble the unit. After the electric wire 5 is softened by preheating the wire, it is sealed with softenig thermosetting insulating resin. The electric wire 5 is wound on the bobbin 4 to prepare the coil 3. Subsequently, the coil 3 is joined with the inside iron core 1 and heated to the extent that the resin in a sealing layer is softened, whereas pressure is applied to the periphery of the coil 3. The softened resin then floats under pressure, so that the sealing layer between the electric wire 5 and paper 7 between the layers works to fill up the gap between the electric wires.

Description

[Detailed description of the invention] The present invention relates to a method for manufacturing induction electromagnetic ceramics.

Wrap a coil around the iron core and coat it with Fess or other impregnating agent.
It is well known for use in water impregnated with water, ballasts for discharge lamps, and small power pressure devices. On the other hand, this type of induction electromagnetic device VC reduces the cross section of the coil.

A coil V with electric wire wound around a bobbin is fitted onto the iron core, and then pressure is applied from around the coil V.

In the process of winding the wire around the bobbin, press the wire against the bobbin and twist it into the center f[7], or make the cross section elliptical and q-shaped, and the wire will be wrapped around the bobbin while being wound around the bobbin. H stone.

With the carp V that is inserted in this way, the interlayer distance is shortened, and as a result, the cross section of the fill is reduced, making it possible to make the carp V smaller, lighter, and less noisy, which is extremely convenient. Good.

Tokorozu (In this way, the gap between the layers is shortened and the gap between the layers suddenly becomes extremely small, so when I try to impregnate the impregnation agent between the layers later, the impregnation agent penetrates between the layers. Therefore, the gap between the layers becomes extremely small. The electric layer tends to cause thermal deterioration of the carp V, which adversely affects its lifespan and characteristics.

In order to reduce the cross section of the coil, the impregnating agent value f
If it does not penetrate sufficiently between the layers, the same problem as mentioned above will occur.

The object of the invention is to prevent heat deterioration of the carp V by impregnating the impregnating agent between the layers of the fill.

In this invention, a coil is connected to a wire using a wire coated with a thermosetting insulating resin that is softened by heating and then hardened.
After that, insert it into the iron core.

It is characterized by ζ7, which pressurizes the surrounding area of the resin by applying @L or heating at a temperature higher than the softened mixed carbon of the resin.

According to Tore, heating the carp V softens the resin, so if pressure is applied from the negative surroundings, the resin value! It moves as if filling the gap between the wires. As a result, the space between each wire is filled with the resin, and in particular, the filler≠K [If the filler does not penetrate between the wires, the main thermal deterioration can be prevented.

In this case, due to the application of pressure, the amount of deviation between the wires in the adjacent layer is Jt. It's convenient. Also, by heating and pressurizing, WII
7Sx sea urchin and sparrow that are in direct contact with the electric wire and interlayer paper by JK coated and T11 greasy stagnation.

VC'i & stone are used to insulate the bare wires between the first layer and the wires in the next layer. In addition, if the electric wire has been coated with insulation in advance, the insulation coating and the interlayer paper should be used to insulate the wire from the other layer.

Embodiments of this invention will be described with reference to the drawings. Figure 1 shows a ballast for a discharge lamp, and numeral 1 indicates a central core, a BFi outer core, and a three-piece coil. Coil 3 is made by winding wire 5 around bobbin 4.
This coil L/3 is assembled by mating the inner core IVc with the outer core 2.

In this invention, ★4E- shows the coating layer of the electric wire 5 before heating. This wire #I5 is wound around the bobbin 4 to form a carp v3. Enlarged part of the fiberized carp A/3
-Sukeno is seen in Figure 2. 7Fi interlayer paper.

Fit the coil A/3 to the central iron core l using b, and then
The resin of the immium coating layer 6 is heated to a softened culm skin. Then, pressure is applied from around the carp v3 while or after heating. The suddenly softened resin becomes undulating under pressure. /%
The coating layer between the special kilrM5 and the interlayer paper is thick enough to fill the gaps between the wires.

This figure is shown in Figure 3 of Reimaki. In this way, the gaps between the wires are filled with resin, and especially impregnating agents such as varnish do not penetrate between the wires and prevent thermal deterioration due to the conductive layer. Become.

As described in detail above, according to the present invention, the impregnating agent penetrates between the wires so that 1kb of the impregnating agent penetrates between the wires. It is necessary to impregnate the coil with the agent, but it is effective in sufficiently preventing thermal deterioration of the coil.

[Brief explanation of the drawing]

@ Figure 1 is a plan sectional view of a ballast for a discharge lamp, and Figure 2 is an enlarged sectional view of a part of the carp V before heating and pressure treatment. Figure 3 is a partially enlarged sectional view of carp V after heating and pressure treatment. 3・s Kaori・・Coil%4 a@aaa bobbin, 5a・−
am. 6...Coating layer (N・" 1@3 Figure 2 Figure 3

Claims (1)

[Claims] The coil V is coated with an insulating resin that softens by heating and then hardens, and is wound around a bobbin, and the coil V is fitted to the iron core, and then the coil is heated above the softening temperature of the resin. A method for producing an induction electromagnetic ceramic in which the coil V is pressurized from the surroundings so as to fill the gap between each electric wire with the resin.